389
SXUS45 KMSO 182330
RECGPI

Recreation Forecast for Flathead Lake
National Weather Service Missoula MT
505 PM MDT Fri Sep 18 2026

Note: The experimental wave height forecasts are representative of
the mid lake waters and downwind shores. Wave heights may be
significantly less on upwind shores.

.Tonight...Mostly cloudy. Lows in the mid 50s. Variable winds up
to 10 mph. Waves less than 1 foot.
.SATURDAY...Sunny. Highs around 70 . Variable winds up to 10 mph.
Waves less than 1 foot.
.SATURDAY NIGHT...Partly cloudy. Lows in the mid 50s. Variable
winds up to 10 mph. Waves less than 1 foot.
.SUNDAY...Sunny. Highs around 70 . Variable winds up to 10 mph.
Waves less than 1 foot.